Research firm comScore has released its December numbers for mobile subscriber market share and it’s still not looking good for Microsoft.
Microsoft’s smartphone platform — primarily Windows Phone but also including Windows Mobile — had 4.7 percent of U.S. smartphone subscribers for the three months average ended in December 2011. That’s down from 5.2 percent for the same period ending in November and 5.6 percent for the three months ending in September.
Google’s Android still leads with 47.3 percent market share. Apple had 29.6 percent. RIM continued to slide, going from 18.9 percent for the three months ended in September to 16 percent for the three months ended in December.
Overall, 97.9 million people in the U.S. owned smartphones during the three months ending in December, according to comScore.
Here’s comScore’s chart: